The Vulcan Foundation Vent Flange Types: Vulcan gable vents let your attic breathe while providing essential ember-resistant technology. Plus, they look great! The ventilation system on a home should be the first line of defense when wildfire is near while still providing aesthetics. Gable vents are the vents on the exterior walls of a home’s attic to allow for proper airflow. Gable vents provide necessary ventilation to deter condensation which can lead to mold and mildew. Vulcan Vents are ideal for new construction in various materials and retrofit kits are available for existing continuous vents on the home. Corrosion-resistant vents were created with homes that face wildfire threat in mind. An inner noncombustible wire mesh screen protects vent openings from floating ember entry while an intumescent coating expands in the presence of intense heat, further blocking entry of embers and flames.